Spring-motor for sewing-machines.



No. 6 57,3|8. Patented Sept. 47 |900. J. H. OLIVER. SPRING MOTOR FORSEWING MACHINES.

(Application led June 4, 19004 2 Sheets-Sheet l (No Model.)

No. '657,313. Patented sept. 4, |900. J. n. OLIVER.. SPBlNG MOTOR FRSEWING MACHINES.

(Application led June 4, 1900.

(No Model.)

2 Sheets-Sheet 2.

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i UNITED STATES liixrieivflr OFFICE.

JAMES ROBERT OLIVER, OF MCMINNVILLE, TENNESSEE.

SPRING-MOTOR FOR SEWING-MACHINES.

SPEClFIQATION forming part of Letters Patent No. 657,318, datedSeptember 4, 1900.

Application filed June 4,1900., Serial No. 19,062. (No model.)

To all whom it may con/cern:

Beit known that I, JAMES ROBERT OLIVER, a citizen of the United States,residing at Mc- Minnville, in the county of Warren and State ofTennessee, have invented a new and useful Spring-Motor forSewing-Machines, of which the following is a specification.

The invention relates to improvements in 'spring-motors forsewing-machines.

One object of the present invention is to improve the construction ofmotors for sewingfmachines and to provide an exceedingly simple andinexpensive one adapted to be readily applied to an ordinarysewing-machine without necessitating any material al- 1er-ation in theconstruction thereof and capable of being readily wound up andcontrolled by the operator without leaving her position at the front ofthe machine. y

A further object of the invention is to provide a spring-motor of thischaracter which will admit of the machine being stopped at any positionwith the'needle up or down and which will permit a bobbin to be wound inthe usual manner without running the other part of the machine.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended. l

In the drawings, Figure 1 is a front elevation of a sewing-machineprovided with 'a spring-motor constructed in accordancewith thisinvention. Fig. `2 is a rear elevation of the same. Fig. 3 is a verticalsectional View taken transversely of the machine from front to rear.Fig. 4 is a plan View, the table of the machine heilig removed.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

1 designates a main drive-wheel consisting of a bevel gear-wheel mountedon a horizontal shaft 2 and which meshes with a small bevel-pinion 3,located at one side of the machine andV connected with the" band-wheel 4thereof. The band-wheel 4 of the machine, which is of the ordinaryconstruction, is mounted on a horizontal bar or shaft 5, which isstationary and which extends from one side of the frame 6 of the machineto the other side thereof to support the said band-Wheel and also toform a support for the front end of the horizontal main shaft 2, asclearly shown in Fig.4 of the accompanying drawings. The front end ofthe main shaft is preferably provided with cone-bearings, and the rearend or portion which is journaled in the rear diagonally disposedcrossed braces 7 of the frame is provided with suitable cone-bear ings;but ball-bearings or any other suitable antifriction devices may beprovided for reducing the friction to a minimum.

The main shaft 2 is connected with the inner end of a power-spring 8 bya set-screw or other suitable means, and the outer end 9 of the springis connected with the frame of the machine by a rod l0, located beneaththe top or table l1. The large drive-wheel 1 is mounted loose on themain shaft 2, but is connected with the same by a suitable clutch 12,which may be of any desired construction and which is adapted to permitthe shaft 2 to be turned independently of it when winding the spring.The spring when wound up is adapted to drive the shaft 2, and the motionthereof is communicated to the band-wheel 4 through the bevelgearingbefore described, as clearly illustrated in Fig. 4 'of the accompanyingdrawings.

The rear .end of the main shaft 2 has loosely mounted upon it a largegear-wheel 13, which is provided with a notched hub 14, adapted tointerlock with a notched collar 15 ofthe shaft, -whereby it may berigidly connected with the sam'e for winding up the spring, ashereinafter explained. The collar 15 is secured to the rear portion ofthe shaft by a set-screw, and the inner end of the hub o f the reargear-Wheel 13 is provided with an annular groove 16, receiving theforked end of a bar 17, which is slidingly mounted on the frame andwhich is connected with an operating-lever 18. 'lhe bar 17 isapproximately L-shaped, its rear portion being provided with the saidforked end 19 and its front portion being pivoted 'to the operatinglever18. The forwardly-extending portion of the L-shaped lifting-bar ismounted in suitable guides or brackets of the adjacent side of themachine, and the operating-lever 18, which is fulcrumed at its lower end20, is provided at its upper end with a handle and is' adapted tobemoved inwardand outward l to engage `therea'r gear-Wheel withfthe collarand todisengage it therefrom.

` kThe large rear gear-Wheel 13 meshes 'with l abracket or'hanger 23.

an upper rear pinionvor gear 21, mounted ona rod 22, forming ashaft andextending tothe g front of the machine, vWhere it is journ'alied'in`,The bracket or hanger23 Vconsists of two substantially U- shapedsides-provided Aattheirterminalsfwith vattachment-plates, which arescrewed orfoth'- erwise secured tothe top or table of the, ina-nVchilies?Thefronit'end ofthe rod or shaft '22i 1 "carries a ,small` gearor pinion 24', which meshes with a` spurpinion 25 of. a shaft or`spindle 26,Which iextendedbeyondvthefront f of t-'he'machineand carries.a vcrank-handle` i 27,. asclearly illustrated in Fig. 4 of the ac-`companyingl drawings. The crank-handle is adaptedto be rotated,andthrough the front spur-pinions andV the'- rear spurr gear-Wheels land 21is adapted to'rotate the main shaft 4carrying a swivel'ed wheel 30 atits inner end for engaging therim of the band-Wheel, and the saidswiveled Wheel is provided' with aV rubber rim or tire and is adapted torun on `when the needle is either up or down.

the said band-wheel. The swivel Vconnection between the brak-e or.`controlling wheelBO and the screw permits the latter to be adjusted orrotated independently of the former. c By' adjusting the screw themachine may be stopped, started, and caused to run at thehvdesired rateof speed, and the stopping oi"- the machine may be effected at any timeand:

What is'claimed is-` 1. In a device of the class described, thecombination with a sewing-machine, of ahorizoutal main shaft, a springconnected there-y with, bevel-gearing con necting the main shaft withthe band-wheel of the machine, a rear gear-wheel having a clutchconnection with the shaft, an operating device for throwing the reargear-wheel into and out of engagement with themain shaft, andgearingmesh# ing with the rear gear-Wheel for Winding'the spring, substantiallyas described.

` 2. In a device of the-class described, the combination with asewing-machine, of a horizontal main shaft, a spring -connected with thesame, gearingconnecting the main shaft with the band-wheel of themachine, a rear gear-Wheel slidingly mounted on the main shaft andhavinga clutch KAconnection with the same, tan operating-'lever arrangedlat the front of 'the machine,"a*sliding` bar connected with thelever-aud with the `rear gear-wheel, and windingmechanism meshing withthe rear gear-wheel, substantially as described.

l AIn a device, of thel class f described, the combination with asewing-machin e, of-a horizontal Amain shaft, a spring.connected with'the same, gearing con uecting the' main shaft with the band-Wheel ofthe machine, a gear `wheel" slidinglyl mounted onthe main "shaft andhavin ga clutchjconn'ection w-ith the same, :asu'bst'antially Leshapedbar slidingly mount- `eden the frame of the machine and connected withthe gear-whjeel,iand -iajlever fulcrumed at `'its lowerpend' at thefront of the machine and provided :at-its upper endwith a handleand-connected between its ends withlthe sliding bar, substantially asfdescribed. 'Y

4, In aldeviceof v.the class described, the combination Withajmachine,of a mainV shaft 2, gearing connecting the mainshaft with theband-wheelof the machine,a spring connected with the main shaft, agear-wheel slidingly mountedon themainshaft andkhaving a .clutchconnection with the same', -a countershaft 22,agear-Wheelmounted on thecountershaft and `meshing with the said gear-Wheel,

infront gearing "connected with the front end of the counter-Shaft 22,and a crank for op- @rating the front gearing, substantially as de- '5.In a device of the class described, the combinationy of a machine:having a frame provided with a horizontal bar supporting the band-wheelofthe machine, a main shaft journaled 011 the frame and on the horizonntal bar, gearing connecting the main shaft counter-shaft, areargear-wheel 13 slidingly mounted on the main shaft and having a clutchconnection with the same and mesh- JAMES ROBERT OLIVER.

Y Witnesses:

W. F. ELKINS, C. M. MoRFoRD.

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